fix(README): 修正文档中协议字段链接路径

fix(main): 修正主循环中延时以保持程序运行

src/ads1256.c

@@ -26,15 +26,14 @@ LOG_MODULE_REGISTER(ads1256, LOG_LEVEL_INF);
 #define SPI_OP (SPI_OP_MODE_MASTER | SPI_MODE_CPHA | SPI_WORD_SET(8) | SPI_LINES_SINGLE)
 
 /* --- 硬件资源 --- */
-static const struct device *spi_dev;
 static struct spi_config spi_cfg;
+static const struct device *spi_dev;
 static const struct gpio_dt_spec cs_spec    = GPIO_DT_SPEC_GET(DT_ALIAS(ads_cs), gpios);
 static const struct gpio_dt_spec drdy_spec  = GPIO_DT_SPEC_GET(DT_ALIAS(ads_drdy), gpios);
 static const struct gpio_dt_spec reset_spec = GPIO_DT_SPEC_GET(DT_ALIAS(ads_reset), gpios);
 
 void ads1256_wait_drdy(uint16_t timeout_ms) {
     /* drdy_spec 配了 GPIO_ACTIVE_LOW，逻辑 1 表示 DRDY 有效（物理拉低） */
-    /* 用 k_usleep 代替 k_busy_wait，让出 CPU 给其他线程 */
     int64_t deadline = k_uptime_get() + timeout_ms;
     while (gpio_pin_get_dt(&drdy_spec) == 0) {
         k_usleep(10);

src/main.c

@@ -23,6 +23,9 @@ int main(void) {
     ble_transport_adv_start();
 
     if (sensor_init()) return 0;
+    while (1) {
+        k_sleep(K_SECONDS(1));
+    }
 
     return 0;
 }